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RI 4481 Diamond Drilling In The Metaline District Pend Oreille County, Wash.By N. L. Wimmler
The Metaline mining district was examined in 1942 by Bureau of Mines engineers with the cooperation of geologists of the Federal Geological Survey. Because the demands of war production were rapidly
Jan 1, 1949
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Probierbüchlein - Title PageA Little Book on the Assaying of Gold, Silver, Copper, and Lead. Also on How to Assay and Work profitably All Minds of Metal. Complied with great care for the benefit of all mintmasters, assay
Jan 1, 1949
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RI 4397 Investigation Of Chestatee Copper And Pyrite Deposit Lumpkin County, Ga.By M. H. Kline
The Chestatee mine is one of several well known pyrite deposits in Georgia that are reputed to carry appreciable quantities of copper with the ore. The deposit is? in Lumpkin County on the Chestatee R
Jan 1, 1949
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Pitchblende Occurrences of the Goldfields Area, SaskatchewanBy A. M. Christie
Acknowledgements The following account has been compiled mainly from records and maps of Eldorado Mining and Refining (1944), Limited, hereinafter called the Crown Company. This work was done under
Jan 1, 1949
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Technical Papers and Discussions - Transformation of Austenite - Anisothermal Formation of Rainite and Proeutectoid Constituents in Steels (Metals Tech., December 1947, T.P. 2290) (with discussionBy Leonard D. Jaffe
In recent years, the advantages of tempered martensite as a microstructure for steel parts have been well established. For parts that must not fracture brittlely when loaded at high rates, at low temp
Jan 1, 1949
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Reservoir Engineering - The Effect of Well Spacing and Drawdown on Recovery from Internal Gas Drive ReservoirsBy John C. Calhoun, Raymond G. Loper
Theoretical calculations for the decline of pressure and the variation of instantaneous producing gas-oil ratio with increased cumulative production have been made for reservoir systems under various
Jan 1, 1949
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Papers - Theory and Interpretation - Factors in the Localization of Mineralized Districts (Mining Tech., Jan. 1945, T.P. 1762, with discussion)By Carlton D. Hulin
The usual concurrence in time and space of intrusive igneous activity, favorable structural disturbance and mineralization, which is so manifest in the mineralized district necessarily indicates a clo
Jan 1, 1949
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Barodynamics (Ground Support) - Determination of Room and Pillar Dimensions for the Oil-shale Mine at Rifle, Colorado (Mining Tech., Nov 1948, TP 2489)By Phillip B. Bucky, Fred D. Wright
The present known petroleum reserves are limited, and unless important new fields are discovered the Nation will be dependent, in the not too distant future, upon imports or upon synthetic liquid fuel
Jan 1, 1949
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Some Notes on the Equipment of the Electrolytic Zinc Company of Australasia Limited, at Rosebery, TasmaniaThe purpose of this paper is to list by tabulation and flow sheet, the operating equipment and installations in use at Rosebery, and to refer to particular items which may be of interest for purposes
Jan 1, 1949
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Technical Papers - Geophysics - Geophysical Investigations for Selection of Sale for Ramapadasagar Dam across the Godavari River in Madras, South India (Mining Tech., Nov. 1947, TP 2287, with discussion)By M. B. Ramachandra Roa
This paper records the results of the earth resistivity surveys made in the Godavari River in connection with the Ramapadasagar project. After describing the topographical and geological features of t
Jan 1, 1949
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Nor-Acme MineBy Nelson Hogg
"THE NOR-ACME gold mine is located close to the north shore of Snow Lake, at 54°53' north latitude and 100°03' west longitude. It is about 75 air miles east of Flin Flon, and 36 miles by road from Wek
Jan 1, 1949
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RI 4612 Chloride Volatilization And Other Tests On A Gold-Copper OreBy A. L. Engel
The sample of ore on which the work described in this paper was done came from Mina Oriente, Carrizal Bajo, Provincia de Atacama, Chile, South America, and was sent at the request of the Chil.ean Gove
Jan 1, 1949
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Technical Papers and Discussions - Properties of Steel - Notch-tensile Characteristics of a Partially Austempered, Low Allay Steel (Metals Tech., February 1948, T.P. 2321)By G. Sachs, L. J. Ebert, W. F. Brown
Isothermal transformation, or "aus-tempering," of a carbon-containing aus-tenite at elevated temperatures yields so-called "intermediate products." Their structure and properties are, for a given hard
Jan 1, 1949
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Technical Papers and Discussions - Transformation of Austenite - An Evaluation of Quenching Oils by Means of the End Quench Test (Metals Tech., April 1948, T.P. 2353) (with discussion)By G. Sandoz, C. A. Siebert
Oil quenching of steel, in good commercial practice, is carried out using a great deal of agitation in the quenching bath. Many of the tests reported in the literature represent the results obtained o
Jan 1, 1949
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Iron and Steel - Influence of Size and the Stress System on the Flow Stress and Fracture Stress of Metals (Metals Tech., June 1948, TP 2373)By D. J. McAdam, G. W. Geil, D. H. Woodard, W. D. Jenkins
.In a series of papers, the authors and their associates have shown that the resistance of a metal to fracture is a function of all three principal stresses. Consequently since a technical cohesion li
Jan 1, 1949
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Copper and Copper Alloys - A High Strength-High Conductivity Copper-silver Alloy Wire (Metals Tech., June 1948, TP 2366)By R. I. Jaffee, J. G. Dunleavy, W. Hodge, H. R. Ogden
Jan 1, 1949
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Technical Note - The Structure at a Cleavage Surface in Ferrite (Metals Tech., Dec. 1948, TN 8)By F. C. Wagner, E. P. Klier, D. E. Nulk
The presence or absence of plastic strain at a cleavarage surface is a question of much importance, and upon its answer depends future possible theoretical work. To investigate this
Jan 1, 1949
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Geology of Ruddygore Copper Mine, ChillagoeIntroductionHistory of MineTopographyGeology of AreaGeneral DescriptionIgneous Rock TypesGranodioriteQuartz monzoniteApliteGranite porphyryMetasomatic ActionAlteration of monzonite/Alteration of aplit
Jan 1, 1949
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Copper and Copper Alloys - Effect of Grain Size on Tensile Strength, Elongation, and Endurance Limit of Deep Drawing Brass (Metals Tech., Sept. 1948, TP 2478)By J. W. Craig, H. L. Walker
Industry has for many years recognized the dependence of certain mechanical and physical properties. as well as workability, upon grain size variations in brass. Although the dependence of properties
Jan 1, 1949
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Inconvertibility of Currency vs The Gold StandardBy Balmer Neilly
To one with so little experience in matters pertaining to currency, international finance, and foreign trade, this is surely an ambitions venture on my part. However, this is a subject of prime import
Jan 1, 1949